/*
 * Copyright (C) 2011 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.gson.internal.bind;

//import com.google.gson.TypeAdapterFactory;
import java.io.IOException;
//import java.math.BigDecimal;
//import java.math.BigInteger;
//import java.net.InetAddress;
//import java.net.URI;
//import java.net.URISyntaxException;
//import java.net.URL;
//import java.sql.Timestamp;
//import java.util.BitSet;
//import java.util.Calendar;
//import java.util.Date;
//import java.util.GregorianCalendar;
//import java.util.HashMap;
//import java.util.Locale;
import java.util.Map;
//import java.util.StringTokenizer;
//import java.util.UUID;

//import com.google.gson.Gson;
import com.google.gson.JsonArray;
import com.google.gson.JsonElement;
//import com.google.gson.JsonIOException;
import com.google.gson.JsonNull;
import com.google.gson.JsonObject;
import com.google.gson.JsonPrimitive;
//import com.google.gson.JsonSyntaxException;
import com.google.gson.TypeAdapter;
//import com.google.gson.annotations.SerializedName;
import com.google.gson.internal.LazilyParsedNumber;
//import com.google.gson.reflect.TypeToken;
import com.google.gson.stream.JsonReader;
//import com.google.gson.stream.JsonToken;
import com.google.gson.stream.JsonWriter;

/**
 * Type adapters for basic types.
 */
public final class TypeAdapters {
  private TypeAdapters() {}

//  @SuppressWarnings("rawtypes")
//  public static final TypeAdapter<Class> CLASS = new TypeAdapter<Class>() {
//    @Override
//    public void write(JsonWriter out, Class value) throws IOException {
//      if (value == null) {
//        out.nullValue();
//      } else {
//        throw new UnsupportedOperationException("Attempted to serialize java.lang.Class: "
//            + value.getName() + ". Forgot to register a type adapter?");
//      }
//    }
//    @Override
//    public Class read(JsonReader in) throws IOException {
//      if (in.peek() == JsonToken.NULL) {
//        in.nextNull();
//        return null;
//      } else {
//        throw new UnsupportedOperationException(
//            "Attempted to deserialize a java.lang.Class. Forgot to register a type adapter?");
//      }
//    }
//  };
//  public static final TypeAdapterFactory CLASS_FACTORY = newFactory(Class.class, CLASS);
//
//  public static final TypeAdapter<BitSet> BIT_SET = new TypeAdapter<BitSet>() {
//    public BitSet read(JsonReader in) throws IOException {
//      if (in.peek() == JsonToken.NULL) {
//        in.nextNull();
//        return null;
//      }
//
//      BitSet bitset = new BitSet();
//      in.beginArray();
//      int i = 0;
//      JsonToken tokenType = in.peek();
//      while (tokenType != JsonToken.END_ARRAY) {
//        boolean set;
//        switch (tokenType) {
//        case NUMBER:
//          set = in.nextInt() != 0;
//          break;
//        case BOOLEAN:
//          set = in.nextBoolean();
//          break;
//        case STRING:
//          String stringValue = in.nextString();
//          try {
//            set = Integer.parseInt(stringValue) != 0;
//          } catch (NumberFormatException e) {
//            throw new JsonSyntaxException(
//                "Error: Expecting: bitset number value (1, 0), Found: " + stringValue);
//          }
//          break;
//        default:
//          throw new JsonSyntaxException("Invalid bitset value type: " + tokenType);
//        }
//        if (set) {
//          bitset.set(i);
//        }
//        ++i;
//        tokenType = in.peek();
//      }
//      in.endArray();
//      return bitset;
//    }
//
//    public void write(JsonWriter out, BitSet src) throws IOException {
//      if (src == null) {
//        out.nullValue();
//        return;
//      }
//
//      out.beginArray();
//      for (int i = 0; i < src.length(); i++) {
//        int value = (src.get(i)) ? 1 : 0;
//        out.value(value);
//      }
//      out.endArray();
//    }
//  };
//
//  public static final TypeAdapterFactory BIT_SET_FACTORY = newFactory(BitSet.class, BIT_SET);
//
//  public static final TypeAdapter<Boolean> BOOLEAN = new TypeAdapter<Boolean>() {
//    @Override
//    public Boolean read(JsonReader in) throws IOException {
//      if (in.peek() == JsonToken.NULL) {
//        in.nextNull();
//        return null;
//      } else if (in.peek() == JsonToken.STRING) {
//        // support strings for compatibility with GSON 1.7
//        return Boolean.parseBoolean(in.nextString());
//      }
//      return in.nextBoolean();
//    }
//    @Override
//    public void write(JsonWriter out, Boolean value) throws IOException {
//      if (value == null) {
//        out.nullValue();
//        return;
//      }
//      out.value(value);
//    }
//  };
//
//  /**
//   * Writes a boolean as a string. Useful for map keys, where booleans aren't
//   * otherwise permitted.
//   */
//  public static final TypeAdapter<Boolean> BOOLEAN_AS_STRING = new TypeAdapter<Boolean>() {
//    @Override public Boolean read(JsonReader in) throws IOException {
//      if (in.peek() == JsonToken.NULL) {
//        in.nextNull();
//        return null;
//      }
//      return Boolean.valueOf(in.nextString());
//    }
//
//    @Override public void write(JsonWriter out, Boolean value) throws IOException {
//      out.value(value == null ? "null" : value.toString());
//    }
//  };
//
//  public static final TypeAdapterFactory BOOLEAN_FACTORY
//      = newFactory(boolean.class, Boolean.class, BOOLEAN);
//
//  public static final TypeAdapter<Number> BYTE = new TypeAdapter<Number>() {
//    @Override
//    public Number read(JsonReader in) throws IOException {
//      if (in.peek() == JsonToken.NULL) {
//        in.nextNull();
//        return null;
//      }
//      try {
//        int intValue = in.nextInt();
//        return (byte) intValue;
//      } catch (NumberFormatException e) {
//        throw new JsonSyntaxException(e);
//      }
//    }
//    @Override
//    public void write(JsonWriter out, Number value) throws IOException {
//      out.value(value);
//    }
//  };
//
//  public static final TypeAdapterFactory BYTE_FACTORY
//      = newFactory(byte.class, Byte.class, BYTE);
//
//  public static final TypeAdapter<Number> SHORT = new TypeAdapter<Number>() {
//    @Override
//    public Number read(JsonReader in) throws IOException {
//      if (in.peek() == JsonToken.NULL) {
//        in.nextNull();
//        return null;
//      }
//      try {
//        return (short) in.nextInt();
//      } catch (NumberFormatException e) {
//        throw new JsonSyntaxException(e);
//      }
//    }
//    @Override
//    public void write(JsonWriter out, Number value) throws IOException {
//      out.value(value);
//    }
//  };
//
//  public static final TypeAdapterFactory SHORT_FACTORY
//      = newFactory(short.class, Short.class, SHORT);
//
//  public static final TypeAdapter<Number> INTEGER = new TypeAdapter<Number>() {
//    @Override
//    public Number read(JsonReader in) throws IOException {
//      if (in.peek() == JsonToken.NULL) {
//        in.nextNull();
//        return null;
//      }
//      try {
//        return in.nextInt();
//      } catch (NumberFormatException e) {
//        throw new JsonSyntaxException(e);
//      }
//    }
//    @Override
//    public void write(JsonWriter out, Number value) throws IOException {
//      out.value(value);
//    }
//  };
//
//  public static final TypeAdapterFactory INTEGER_FACTORY
//      = newFactory(int.class, Integer.class, INTEGER);
//
//  public static final TypeAdapter<Number> LONG = new TypeAdapter<Number>() {
//    @Override
//    public Number read(JsonReader in) throws IOException {
//      if (in.peek() == JsonToken.NULL) {
//        in.nextNull();
//        return null;
//      }
//      try {
//        return in.nextLong();
//      } catch (NumberFormatException e) {
//        throw new JsonSyntaxException(e);
//      }
//    }
//    @Override
//    public void write(JsonWriter out, Number value) throws IOException {
//      out.value(value);
//    }
//  };
//
//  public static final TypeAdapter<Number> FLOAT = new TypeAdapter<Number>() {
//    @Override
//    public Number read(JsonReader in) throws IOException {
//      if (in.peek() == JsonToken.NULL) {
//        in.nextNull();
//        return null;
//      }
//      return (float) in.nextDouble();
//    }
//    @Override
//    public void write(JsonWriter out, Number value) throws IOException {
//      out.value(value);
//    }
//  };
//
//  public static final TypeAdapter<Number> DOUBLE = new TypeAdapter<Number>() {
//    @Override
//    public Number read(JsonReader in) throws IOException {
//      if (in.peek() == JsonToken.NULL) {
//        in.nextNull();
//        return null;
//      }
//      return in.nextDouble();
//    }
//    @Override
//    public void write(JsonWriter out, Number value) throws IOException {
//      out.value(value);
//    }
//  };
//
//  public static final TypeAdapter<Number> NUMBER = new TypeAdapter<Number>() {
//    @Override
//    public Number read(JsonReader in) throws IOException {
//      JsonToken jsonToken = in.peek();
//      switch (jsonToken) {
//      case NULL:
//        in.nextNull();
//        return null;
//      case NUMBER:
//        return new LazilyParsedNumber(in.nextString());
//      default:
//        throw new JsonSyntaxException("Expecting number, got: " + jsonToken);
//      }
//    }
//    @Override
//    public void write(JsonWriter out, Number value) throws IOException {
//      out.value(value);
//    }
//  };
//
//  public static final TypeAdapterFactory NUMBER_FACTORY = newFactory(Number.class, NUMBER);
//
//  public static final TypeAdapter<Character> CHARACTER = new TypeAdapter<Character>() {
//    @Override
//    public Character read(JsonReader in) throws IOException {
//      if (in.peek() == JsonToken.NULL) {
//        in.nextNull();
//        return null;
//      }
//      String str = in.nextString();
//      if (str.length() != 1) {
//        throw new JsonSyntaxException("Expecting character, got: " + str);
//      }
//      return str.charAt(0);
//    }
//    @Override
//    public void write(JsonWriter out, Character value) throws IOException {
//      out.value(value == null ? null : String.valueOf(value));
//    }
//  };
//
//  public static final TypeAdapterFactory CHARACTER_FACTORY
//      = newFactory(char.class, Character.class, CHARACTER);
//
//  public static final TypeAdapter<String> STRING = new TypeAdapter<String>() {
//    @Override
//    public String read(JsonReader in) throws IOException {
//      JsonToken peek = in.peek();
//      if (peek == JsonToken.NULL) {
//        in.nextNull();
//        return null;
//      }
//      /* coerce booleans to strings for backwards compatibility */
//      if (peek == JsonToken.BOOLEAN) {
//        return Boolean.toString(in.nextBoolean());
//      }
//      return in.nextString();
//    }
//    @Override
//    public void write(JsonWriter out, String value) throws IOException {
//      out.value(value);
//    }
//  };
//  
//  public static final TypeAdapter<BigDecimal> BIG_DECIMAL = new TypeAdapter<BigDecimal>() {
//    @Override public BigDecimal read(JsonReader in) throws IOException {
//      if (in.peek() == JsonToken.NULL) {
//        in.nextNull();
//        return null;
//      }
//      try {
//        return new BigDecimal(in.nextString());
//      } catch (NumberFormatException e) {
//        throw new JsonSyntaxException(e);
//      }
//    }
//
//    @Override public void write(JsonWriter out, BigDecimal value) throws IOException {
//      out.value(value);
//    }
//  };
//  
//  public static final TypeAdapter<BigInteger> BIG_INTEGER = new TypeAdapter<BigInteger>() {
//    @Override public BigInteger read(JsonReader in) throws IOException {
//      if (in.peek() == JsonToken.NULL) {
//        in.nextNull();
//        return null;
//      }
//      try {
//        return new BigInteger(in.nextString());
//      } catch (NumberFormatException e) {
//        throw new JsonSyntaxException(e);
//      }
//    }
//
//    @Override public void write(JsonWriter out, BigInteger value) throws IOException {
//      out.value(value);
//    }
//  };
//
//  public static final TypeAdapterFactory STRING_FACTORY = newFactory(String.class, STRING);
//
//  public static final TypeAdapter<StringBuilder> STRING_BUILDER = new TypeAdapter<StringBuilder>() {
//    @Override
//    public StringBuilder read(JsonReader in) throws IOException {
//      if (in.peek() == JsonToken.NULL) {
//        in.nextNull();
//        return null;
//      }
//      return new StringBuilder(in.nextString());
//    }
//    @Override
//    public void write(JsonWriter out, StringBuilder value) throws IOException {
//      out.value(value == null ? null : value.toString());
//    }
//  };
//
//  public static final TypeAdapterFactory STRING_BUILDER_FACTORY =
//    newFactory(StringBuilder.class, STRING_BUILDER);
//
//  public static final TypeAdapter<StringBuffer> STRING_BUFFER = new TypeAdapter<StringBuffer>() {
//    @Override
//    public StringBuffer read(JsonReader in) throws IOException {
//      if (in.peek() == JsonToken.NULL) {
//        in.nextNull();
//        return null;
//      }
//      return new StringBuffer(in.nextString());
//    }
//    @Override
//    public void write(JsonWriter out, StringBuffer value) throws IOException {
//      out.value(value == null ? null : value.toString());
//    }
//  };
//
//  public static final TypeAdapterFactory STRING_BUFFER_FACTORY =
//    newFactory(StringBuffer.class, STRING_BUFFER);
//
//  public static final TypeAdapter<URL> URL = new TypeAdapter<URL>() {
//    @Override
//    public URL read(JsonReader in) throws IOException {
//      if (in.peek() == JsonToken.NULL) {
//        in.nextNull();
//        return null;
//      }
//      String nextString = in.nextString();
//      return "null".equals(nextString) ? null : new URL(nextString);
//    }
//    @Override
//    public void write(JsonWriter out, URL value) throws IOException {
//      out.value(value == null ? null : value.toExternalForm());
//    }
//  };
//
//  public static final TypeAdapterFactory URL_FACTORY = newFactory(URL.class, URL);
//
//  public static final TypeAdapter<URI> URI = new TypeAdapter<URI>() {
//    @Override
//    public URI read(JsonReader in) throws IOException {
//      if (in.peek() == JsonToken.NULL) {
//        in.nextNull();
//        return null;
//      }
//      try {
//        String nextString = in.nextString();
//        return "null".equals(nextString) ? null : new URI(nextString);
//      } catch (URISyntaxException e) {
//        throw new JsonIOException(e);
//      }
//    }
//    @Override
//    public void write(JsonWriter out, URI value) throws IOException {
//      out.value(value == null ? null : value.toASCIIString());
//    }
//  };
//
//  public static final TypeAdapterFactory URI_FACTORY = newFactory(URI.class, URI);
//
//  public static final TypeAdapter<InetAddress> INET_ADDRESS = new TypeAdapter<InetAddress>() {
//    @Override
//    public InetAddress read(JsonReader in) throws IOException {
//      if (in.peek() == JsonToken.NULL) {
//        in.nextNull();
//        return null;
//      }
//      // regrettably, this should have included both the host name and the host address
//      return InetAddress.getByName(in.nextString());
//    }
//    @Override
//    public void write(JsonWriter out, InetAddress value) throws IOException {
//      out.value(value == null ? null : value.getHostAddress());
//    }
//  };
//
//  public static final TypeAdapterFactory INET_ADDRESS_FACTORY =
//    newTypeHierarchyFactory(InetAddress.class, INET_ADDRESS);
//
//  public static final TypeAdapter<UUID> UUID = new TypeAdapter<UUID>() {
//    @Override
//    public UUID read(JsonReader in) throws IOException {
//      if (in.peek() == JsonToken.NULL) {
//        in.nextNull();
//        return null;
//      }
//      return java.util.UUID.fromString(in.nextString());
//    }
//    @Override
//    public void write(JsonWriter out, UUID value) throws IOException {
//      out.value(value == null ? null : value.toString());
//    }
//  };
//
//  public static final TypeAdapterFactory UUID_FACTORY = newFactory(UUID.class, UUID);
//
//  public static final TypeAdapterFactory TIMESTAMP_FACTORY = new TypeAdapterFactory() {
//    @SuppressWarnings("unchecked") // we use a runtime check to make sure the 'T's equal
//    public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> typeToken) {
//      if (typeToken.getRawType() != Timestamp.class) {
//        return null;
//      }
//
//      final TypeAdapter<Date> dateTypeAdapter = gson.getAdapter(Date.class);
//      return (TypeAdapter<T>) new TypeAdapter<Timestamp>() {
//        @Override public Timestamp read(JsonReader in) throws IOException {
//          Date date = dateTypeAdapter.read(in);
//          return date != null ? new Timestamp(date.getTime()) : null;
//        }
//
//        @Override public void write(JsonWriter out, Timestamp value) throws IOException {
//          dateTypeAdapter.write(out, value);
//        }
//      };
//    }
//  };
//
//  public static final TypeAdapter<Calendar> CALENDAR = new TypeAdapter<Calendar>() {
//    private static final String YEAR = "year";
//    private static final String MONTH = "month";
//    private static final String DAY_OF_MONTH = "dayOfMonth";
//    private static final String HOUR_OF_DAY = "hourOfDay";
//    private static final String MINUTE = "minute";
//    private static final String SECOND = "second";
//
//    @Override
//    public Calendar read(JsonReader in) throws IOException {
//      if (in.peek() == JsonToken.NULL) {
//        in.nextNull();
//        return  null;
//      }
//      in.beginObject();
//      int year = 0;
//      int month = 0;
//      int dayOfMonth = 0;
//      int hourOfDay = 0;
//      int minute = 0;
//      int second = 0;
//      while (in.peek() != JsonToken.END_OBJECT) {
//        String name = in.nextName();
//        int value = in.nextInt();
//        if (YEAR.equals(name)) {
//          year = value;
//        } else if (MONTH.equals(name)) {
//          month = value;
//        } else if (DAY_OF_MONTH.equals(name)) {
//          dayOfMonth = value;
//        } else if (HOUR_OF_DAY.equals(name)) {
//          hourOfDay = value;
//        } else if (MINUTE.equals(name)) {
//          minute = value;
//        } else if (SECOND.equals(name)) {
//          second = value;
//        }
//      }
//      in.endObject();
//      return new GregorianCalendar(year, month, dayOfMonth, hourOfDay, minute, second);
//    }
//
//    @Override
//    public void write(JsonWriter out, Calendar value) throws IOException {
//      if (value == null) {
//        out.nullValue();
//        return;
//      }
//      out.beginObject();
//      out.name(YEAR);
//      out.value(value.get(Calendar.YEAR));
//      out.name(MONTH);
//      out.value(value.get(Calendar.MONTH));
//      out.name(DAY_OF_MONTH);
//      out.value(value.get(Calendar.DAY_OF_MONTH));
//      out.name(HOUR_OF_DAY);
//      out.value(value.get(Calendar.HOUR_OF_DAY));
//      out.name(MINUTE);
//      out.value(value.get(Calendar.MINUTE));
//      out.name(SECOND);
//      out.value(value.get(Calendar.SECOND));
//      out.endObject();
//    }
//  };
//
//  public static final TypeAdapterFactory CALENDAR_FACTORY =
//    newFactoryForMultipleTypes(Calendar.class, GregorianCalendar.class, CALENDAR);
//
//  public static final TypeAdapter<Locale> LOCALE = new TypeAdapter<Locale>() {
//    @Override
//    public Locale read(JsonReader in) throws IOException {
//      if (in.peek() == JsonToken.NULL) {
//        in.nextNull();
//        return null;
//      }
//      String locale = in.nextString();
//      StringTokenizer tokenizer = new StringTokenizer(locale, "_");
//      String language = null;
//      String country = null;
//      String variant = null;
//      if (tokenizer.hasMoreElements()) {
//        language = tokenizer.nextToken();
//      }
//      if (tokenizer.hasMoreElements()) {
//        country = tokenizer.nextToken();
//      }
//      if (tokenizer.hasMoreElements()) {
//        variant = tokenizer.nextToken();
//      }
//      if (country == null && variant == null) {
//        return new Locale(language);
//      } else if (variant == null) {
//        return new Locale(language, country);
//      } else {
//        return new Locale(language, country, variant);
//      }
//    }
//    @Override
//    public void write(JsonWriter out, Locale value) throws IOException {
//      out.value(value == null ? null : value.toString());
//    }
//  };
//
//  public static final TypeAdapterFactory LOCALE_FACTORY = newFactory(Locale.class, LOCALE);

  public static final TypeAdapter<JsonElement> JSON_ELEMENT = new TypeAdapter<JsonElement>() {
    @Override public JsonElement read(JsonReader in) throws IOException {
      switch (in.peek()) {
      case STRING:
        return new JsonPrimitive(in.nextString());
      case NUMBER:
        String number = in.nextString();
        return new JsonPrimitive(new LazilyParsedNumber(number));
      case BOOLEAN:
        return new JsonPrimitive(in.nextBoolean());
      case NULL:
        in.nextNull();
        return JsonNull.INSTANCE;
      case BEGIN_ARRAY:
        JsonArray array = new JsonArray();
        in.beginArray();
        while (in.hasNext()) {
          array.add(read(in));
        }
        in.endArray();
        return array;
      case BEGIN_OBJECT:
        JsonObject object = new JsonObject();
        in.beginObject();
        while (in.hasNext()) {
          object.add(in.nextName(), read(in));
        }
        in.endObject();
        return object;
      case END_DOCUMENT:
      case NAME:
      case END_OBJECT:
      case END_ARRAY:
      default:
        throw new IllegalArgumentException();
      }
    }

    @Override public void write(JsonWriter out, JsonElement value) throws IOException {
      if (value == null || value.isJsonNull()) {
        out.nullValue();
      } else if (value.isJsonPrimitive()) {
        JsonPrimitive primitive = value.getAsJsonPrimitive();
        if (primitive.isNumber()) {
          out.value(primitive.getAsNumber());
        } else if (primitive.isBoolean()) {
          out.value(primitive.getAsBoolean());
        } else {
          out.value(primitive.getAsString());
        }

      } else if (value.isJsonArray()) {
        out.beginArray();
        for (JsonElement e : value.getAsJsonArray()) {
          write(out, e);
        }
        out.endArray();

      } else if (value.isJsonObject()) {
        out.beginObject();
        for (Map.Entry<String, JsonElement> e : value.getAsJsonObject().entrySet()) {
          out.name(e.getKey());
          write(out, e.getValue());
        }
        out.endObject();

      } else {
        throw new IllegalArgumentException("Couldn't write " + value.getClass());
      }
    }
  };

//  public static final TypeAdapterFactory JSON_ELEMENT_FACTORY
//      = newTypeHierarchyFactory(JsonElement.class, JSON_ELEMENT);
//
//  private static final class EnumTypeAdapter<T extends Enum<T>> extends TypeAdapter<T> {
//    private final Map<String, T> nameToConstant = new HashMap<String, T>();
//    private final Map<T, String> constantToName = new HashMap<T, String>();
//
//    public EnumTypeAdapter(Class<T> classOfT) {
//      try {
//        for (T constant : classOfT.getEnumConstants()) {
//          String name = constant.name();
//          SerializedName annotation = classOfT.getField(name).getAnnotation(SerializedName.class);
//          if (annotation != null) {
//            name = annotation.value();
//          }
//          nameToConstant.put(name, constant);
//          constantToName.put(constant, name);
//        }
//      } catch (NoSuchFieldException e) {
//        throw new AssertionError();
//      }
//    }
//    public T read(JsonReader in) throws IOException {
//      if (in.peek() == JsonToken.NULL) {
//        in.nextNull();
//        return null;
//      }
//      return nameToConstant.get(in.nextString());
//    }
//
//    public void write(JsonWriter out, T value) throws IOException {
//      out.value(value == null ? null : constantToName.get(value));
//    }
//  }
//
//  public static final TypeAdapterFactory ENUM_FACTORY = newEnumTypeHierarchyFactory();
//
//  public static TypeAdapterFactory newEnumTypeHierarchyFactory() {
//    return new TypeAdapterFactory() {
//      @SuppressWarnings({"rawtypes", "unchecked"})
//      public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> typeToken) {
//        Class<? super T> rawType = typeToken.getRawType();
//        if (!Enum.class.isAssignableFrom(rawType) || rawType == Enum.class) {
//          return null;
//        }
//        if (!rawType.isEnum()) {
//          rawType = rawType.getSuperclass(); // handle anonymous subclasses
//        }
//        return (TypeAdapter<T>) new EnumTypeAdapter(rawType);
//      }
//    };
//  }
//
//  public static <TT> TypeAdapterFactory newFactory(
//      final TypeToken<TT> type, final TypeAdapter<TT> typeAdapter) {
//    return new TypeAdapterFactory() {
//      @SuppressWarnings("unchecked") // we use a runtime check to make sure the 'T's equal
//      public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> typeToken) {
//        return typeToken.equals(type) ? (TypeAdapter<T>) typeAdapter : null;
//      }
//    };
//  }
//
//  public static <TT> TypeAdapterFactory newFactory(
//      final Class<TT> type, final TypeAdapter<TT> typeAdapter) {
//    return new TypeAdapterFactory() {
//      @SuppressWarnings("unchecked") // we use a runtime check to make sure the 'T's equal
//      public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> typeToken) {
//        return typeToken.getRawType() == type ? (TypeAdapter<T>) typeAdapter : null;
//      }
//      @Override public String toString() {
//        return "Factory[type=" + type.getName() + ",adapter=" + typeAdapter + "]";
//      }
//    };
//  }
//
//  public static <TT> TypeAdapterFactory newFactory(
//      final Class<TT> unboxed, final Class<TT> boxed, final TypeAdapter<? super TT> typeAdapter) {
//    return new TypeAdapterFactory() {
//      @SuppressWarnings("unchecked") // we use a runtime check to make sure the 'T's equal
//      public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> typeToken) {
//        Class<? super T> rawType = typeToken.getRawType();
//        return (rawType == unboxed || rawType == boxed) ? (TypeAdapter<T>) typeAdapter : null;
//      }
//      @Override public String toString() {
//        return "Factory[type=" + boxed.getName()
//            + "+" + unboxed.getName() + ",adapter=" + typeAdapter + "]";
//      }
//    };
//  }
//
//  public static <TT> TypeAdapterFactory newFactoryForMultipleTypes(final Class<TT> base,
//      final Class<? extends TT> sub, final TypeAdapter<? super TT> typeAdapter) {
//    return new TypeAdapterFactory() {
//      @SuppressWarnings("unchecked") // we use a runtime check to make sure the 'T's equal
//      public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> typeToken) {
//        Class<? super T> rawType = typeToken.getRawType();
//        return (rawType == base || rawType == sub) ? (TypeAdapter<T>) typeAdapter : null;
//      }
//      @Override public String toString() {
//        return "Factory[type=" + base.getName()
//            + "+" + sub.getName() + ",adapter=" + typeAdapter + "]";
//      }
//    };
//  }
//
//  public static <TT> TypeAdapterFactory newTypeHierarchyFactory(
//      final Class<TT> clazz, final TypeAdapter<TT> typeAdapter) {
//    return new TypeAdapterFactory() {
//      @SuppressWarnings("unchecked")
//      public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> typeToken) {
//        return clazz.isAssignableFrom(typeToken.getRawType()) ? (TypeAdapter<T>) typeAdapter : null;
//      }
//      @Override public String toString() {
//        return "Factory[typeHierarchy=" + clazz.getName() + ",adapter=" + typeAdapter + "]";
//      }
//    };
//  }
}
